Mario (Player 1) uses WASD to move. Luigi (Player 2) uses [←][ ↑ ][→] to move. Try to collect five stars before the other player! -DEBUG- Press F and V simultaneously to toggle debug mode. Debug mode will allow the user to see player info boxes and potentially more in the future. Currently, there's no real use for this as a player and it only exists as a developer (me) tool.